JP4016477B2 - Manufacturing method of movable contact body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a movable contact body for a panel switch constituting a panel switch used for a thin operation panel or the like of various electronic devices.
[0002]
[Prior art]
The structure of a conventional movable contact body for a panel switch will be described with reference to FIGS.
[0003]
In addition, in order to make a structure easy to understand, each drawing expands and represents the dimension of the thickness direction.
[0004]
14A is a sectional view of a conventional movable contact body, FIG. 14B is an enlarged sectional view of the movable contact portion, and FIG. 14C is an exploded perspective view. In FIG. In the sheet plate made of an insulating film coated with the agent 1A, a dome-shaped movable contact 2 made of an elastic metal thin plate is inserted into the plurality of through holes 1B provided in the sheet plate 1 and the pressure-sensitive adhesive 1A. The movable contact body 4 is formed by covering the upper surface of each through-hole 1B with a small sheet 3 made of a flexible insulating film coated with an adhesive 3A, and adhering and holding the upper surface protrusion of the movable contact 2 to the upper surface of the sheet plate 1. Is configured.
[0005]
And in order to make this movable contact body 4 storageable and transportable, sectional drawing of the movable contact body with a protection sheet of Fig.15 (a), the expanded sectional view of the movable contact part of the same (b), and the same ( As shown in the exploded perspective view of c), the separator 5 with the upper surface provided with the through hole 5A at the same position as the through hole 1B of the sheet plate 1 is attached to the lower surface of the sheet plate 1, and further, In order to prevent dust and the like from adhering to the movable contact 2 from the lower surface of the through hole 5A, an insulating film protective sheet 6 coated with an adhesive 6A on the upper surface is attached to the lower surface of the separator 5 so as to block the through hole 5A. In addition, a movable contact body 7 with a protective sheet is provided.
[0006]
When the movable contact body 7 with the protective sheet formed as described above is mounted on the substrate of the equipment used, the separator 5 is peeled off as shown in the side view illustrating the mounting method in FIG. The separator 5 and the protective sheet 6 are peeled off from the upper surface, and the movable contact body 4 is separated. As shown in the enlarged sectional views of the contact portions in FIGS. 16 and 17, the substrate 9 having the predetermined fixed contacts 8 is placed on the substrate 9. A panel switch was formed by overlapping and sticking with the adhesive 1 </ b> A on the lower surface of the sheet plate 1.
[0007]
[Problems to be solved by the invention]
However, in the above-described conventional movable contact body 4 and movable contact body 7 with a protective sheet, the adhesive 1A for bonding to the substrate 9 of the equipment used is applied to the entire lower surface of the sheet plate 1, and the fixed contact 8 When attaching to the substrate 9 provided with the substrate 9, it is difficult for the operator to touch the adhesive 1 </ b> A of the sheet plate 1. Since the contact body 4 must be peeled off from the substrate 9 and discarded, the operator has to carefully attach the contact body 4 to the substrate 9 and the work efficiency is poor.
[0008]
In addition, since the adhesive 1A is applied to the entire lower surface of the sheet plate 1, the cost of the material is increased, and a sheet with an adhesive is punched to make a through hole when manufacturing the material. There also existed the subject that the adhering adhesive had to be wiped off regularly.
[0009]
SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and manufactures a movable contact body for a panel switch having a configuration that is easy to mount on a substrate, takes less time, and is less expensive than the conventional one. It is an object of the present invention to provide a method for manufacturing a movable contact body that can be used .
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems, the method for manufacturing a movable contact body for a panel switch according to the present invention is such that the adhesive is formed in a narrow band shape only at one end portion facing each other on the lower surface of the sheet plate holding the movable contact. A method of manufacturing a movable contact body for manufacturing an attached movable contact body, which is made of an insulating film in which a portion that becomes a gap between each sheet plate holding a movable contact is continuously punched at a predetermined pitch At least two narrow tape-like adhesives are attached in parallel along the longitudinal direction in the vicinity of both sides of the lower surface of the main sheet, and the main sheet is further below the tape-like adhesive. A strip-shaped connecting sheet having the same width as that of the main sheet is bonded, and then connected to the punched portion of the main sheet, and the tape-like adhesive is that of the opposite end positions on the sheet plate side. To remain in the strip of narrow Les are those intended to include a step of removing the unnecessary portion other than the seat plate by half-cutting machining combined main sheet and tape-like adhesive in the outline of the individual sheets plate.
[0011]
Thereby, it is possible to continuously and inexpensively manufacture the movable contact body in which the adhesive is attached in a narrow band shape only in the vicinity of one end facing the lower surface of the sheet plate holding the movable contact, When the movable contact body is bonded to the substrate of the device having a fixed contact, the operator can work with a part without the adhesive, so that the work can be performed reliably and efficiently, and the adhesive is partially applied. Therefore, when manufacturing a movable contact body having a movable contact in the through hole of the sheet plate , the adhesive does not adhere to the mold for punching the through hole. Thus, the processing efficiency can be improved.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, a sheet plate made of an insulating film formed in a substantially square outer shape holds a dome-shaped movable contact made of a thin elastic metal plate, and is opposed to the lower surface of the sheet plate. Is a method of manufacturing a movable contact body for producing a movable contact body in which an adhesive is attached to each of both ends only in a narrow band shape, each sheet holding a dome-shaped movable contact made of an elastic metal thin plate For the strip-shaped main sheet made of an insulating film in which the gaps between the plates are continuously punched at a predetermined pitch, at least two narrow tape-shaped adhesives are located near both sides of the lower surface of the main sheet. Pasting the agent in parallel along the longitudinal direction, and bonding a strip-shaped connecting sheet of the same width as the main sheet below the tape-like adhesive, and then punching the main sheet Align the main sheet and the tape adhesive to the outline of the individual sheet plate so that the tape adhesive remains in a narrow strip at each of the opposite end positions on the sheet plate side. This is a method of manufacturing a movable contact body including a step of removing unnecessary portions other than the sheet plate by half-cutting, and has an effect that the movable contact body having the above configuration can be continuously manufactured at low cost. .
[0021]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, the same code | symbol is attached | subjected about the part of the same structure as what was demonstrated in the term of the prior art, and the detailed description is abbreviate | omitted.
[0022]
(Embodiment 1)
1A is a cross-sectional view of a movable contact body for a panel switch according to a first embodiment of the present invention, FIG. 1B is an enlarged cross-sectional view of the main part, and FIG. 1C is an exploded perspective view thereof. In FIG. 1, reference numeral 11 denotes an insulating film sheet plate having a predetermined size having a plurality of through-holes 11A, and a dome-shaped movable contact 2 made of an elastic metal thin plate is placed in the plurality of through-holes 11A. The upper surface of each through-hole 11A is covered with a small sheet 3 made of a flexible insulating film, which is accommodated and coated with adhesive 3A on the lower surface, and the upper surface protrusion of the movable contact 2 is adhered and held on the upper surface of the sheet plate 11 This is the same as in the conventional technology.
[0023]
However, the pressure-sensitive adhesive 12 applied to the lower surface of the sheet plate 11 is applied in a narrow band shape only on the opposite end portions without the through-hole 11A to form the movable contact body 13.
[0024]
And in order to be able to store and transport this movable contact body 13, sectional drawing of the movable contact body with a protection sheet of Fig.2 (a), the expanded sectional view of the principal part of FIG.2 (b), and the same (c). As shown in the exploded perspective view of FIG. 1, a separator 14 made of an insulating film having a release process applied to the upper surface of the adhesive 12 on the lower surface of the adhesive 12 on the lower surface of the sheet plate 11 is further bonded. On the lower surface, a protective sheet 15 made of an insulating film having approximately the same size as the sheet plate 11 is bonded by a slightly adhesive 15A attached to the entire upper surface to form a movable contact body 16 with a protective sheet. Yes.
[0025]
Here, the adhesive force that the protective sheet 15 is bonded to the lower surface of the separator 14 by the slightly adhesive 15A is larger than the adhesive force that the upper surface of the separator 14 that has been peeled off by the adhesive 12 of the sheet plate 11 is bonded. Further, the intermediate portion of the protective sheet 15 is lightly bonded to the lower surface of the sheet plate 11 so as to block the lower surface of each through-hole 11A of the sheet plate 11 by the slightly adhesive 15A (see FIG. 2B). .
[0026]
The fine pressure-sensitive adhesive 15A attached to the entire upper surface of the protective sheet 15 is an acrylic resin-based adhesive having a composition that does not affect silver, and is stored and transported as a movable contact body 16 with a protective sheet. This does not adversely affect silver plating or the like applied to the contact surface of the movable contact 2 held in the through hole 11A of the plate 11.
[0027]
When the movable contact body 13 is separated from the movable contact body 16 with the protective sheet formed as described above and mounted on the substrate of the device used, as shown in the cross-sectional view illustrating the mounting method in FIG. In addition, the separator 14 and the protective sheet are provided between the upper surface of the strip-shaped separator 14 subjected to the peeling treatment and the adhesive 12 and between the fine adhesive 15 </ b> A attached to the upper surface of the protective sheet 15 and the lower surface of the sheet plate 11. As shown in the sectional view of the substrate portion of the device used in FIG. 4, the strip 15 is overlapped on the substrate 17 having the predetermined fixed contact 8, and the narrow strip-shaped adhesive at both ends of the lower surface of the sheet plate 11. The panel switch 18 is formed by being fixed by being attached by 12.
[0028]
When the separator 14 and the protective sheet 15 are peeled off as described above, the pressure-sensitive adhesive 12 and the pressure-sensitive adhesive 12 and the pressure-sensitive adhesive 12 are prevented from being peeled off from the lower surface of the sheet plate 11 The adhesive strength of the slight pressure-sensitive adhesive 15A is determined.
[0029]
Further, the intermediate portion of the sheet plate 11 may be lifted because there is no adhesive on the lower surface, but this portion is pressed by the crosspiece 20 of the rubber key 19 of the device used and the crosspiece 21 of the case shown in FIG. , Do not float up.
[0030]
As described above, according to the present embodiment, the adhesive 12 for attaching the movable contact body 13 to the substrate 17 of the device used is attached to both ends of the lower surface of the sheet plate 11 in a band shape. Since the operator can work while holding the part without the adhesive 12, the operator can perform the work reliably and efficiently, and can stably fix the individual movable contact bodies 13 after being bonded together. Since the material cost can be reduced and the lower surface of each through hole 11A of the sheet plate 11 can be blocked by the protective sheet 15 with the fine adhesive 15A attached to the entire upper surface, During storage or transportation, dust or the like can be prevented from adhering to the contact surface of the lower surface of the movable contact 2 accommodated in the through hole 11A of the sheet plate 11, and the adhesive 12 is a part without the through hole 11A. Since the adhesive 12 does not adhere to the mold punching the through-hole 11A because it is attached to, maintenance work such as periodical wiping is not required, in which attained the efficiency of the processing.
[0031]
(Embodiment 2)
FIG. 5 is an external perspective view of connected movable contact bodies according to the second embodiment of the present invention. In FIG. 5, 22 is a long belt-like shape that also serves as a protective sheet having a fine adhesive 22A attached to the upper surface. The connection / protection sheet 23 is a narrow tape-like sheet as a separator whose upper surface has been subjected to a peeling process, and the two tape-like sheets 23 are arranged in a predetermined direction along the longitudinal direction of the upper surface of the connection / protection sheet 22. They are bonded in parallel at intervals.
[0032]
Then, by sticking the adhesive 12 on the lower surface of the sheet plate 11 on the two parallel tape-like sheets 23, the movable contact 13 is continuously held at a predetermined pitch, and the sheet plate As with the protective sheet 15 described in the first embodiment, it is lightly bonded with the slight adhesive 22A of the connection / protection sheet 22 so as to close the lower surface of each of the 11 through holes 11A.
[0033]
According to the present embodiment, the movable contact body can be transported in a state of being connected in a strip shape at a predetermined pitch, and can be separated and continuously supplied as an individual movable contact body immediately before being bonded to the substrate of the device used. Therefore, it is possible to increase the efficiency of the bonding operation of the used equipment to the substrate, the automatic bonding can be performed, and the damage of the movable contact during transportation can be almost completely prevented.
[0034]
(Embodiment 3)
6A is a cross-sectional view of a movable contact body with a protective sheet for a panel switch according to a third embodiment of the present invention, FIG. 6B is an enlarged cross-sectional view of the main part, and FIG. In the same figure, the configuration of the movable contact body 13 is the same as in the first embodiment, but the lower surface of the adhesive 12 at both ends facing each other is almost the same size as the sheet plate 11. A protective sheet 24 made of an insulating film having an upper surface is attached to the upper surface of the sheet plate 11, and an intermediate portion thereof is arranged so as to cover the lower surface of each through-hole 11 </ b> A of the sheet plate 11. (See FIG. 6B).
[0035]
When the movable contact body 13 is separated from the movable contact body 25 with the protective sheet formed as described above and mounted on the substrate of the device used, the upper surface of the protective sheet 24 that has been peeled off and the adhesive 12 As in the case of the first embodiment, the panel switch is formed by stripping and fixing the movable contact body 13 by adhering it to the substrate of the equipment to be used with the strip-like adhesive 12 on both ends of the lower surface of the sheet plate 11. It is.
[0036]
As described above, since the movable contact body 25 with the protective sheet according to the present embodiment only covers the lower surface of each through-hole 11A of the sheet plate 11 with the protective sheet 24, the through-hole of the sheet plate 11 is stored or transported. Although it is impossible to completely prevent dust and the like from adhering to the contact surface of the lower surface of the movable contact 2 housed in 11A, the movable contact body can be prevented from being damaged. Therefore, the movable contact body 25 with a protective sheet, which is simple and inexpensive, can be provided, and the protective sheet 24 can be easily peeled off from the movable contact body 13 when mounted on the substrate of the device used. It is something that can be done.
[0037]
(Embodiment 4)
FIG. 7 is an exploded perspective view for explaining the outline of the manufacturing method of the movable contact body for the panel switch according to the fourth embodiment of the present invention. The method will be described according to the manufacturing procedure.
[0038]
First, as shown in the plan view of FIG. 8, a penetration that is necessary for each sheet plate 26 of the movable contact body (shown by a dotted line 26 </ b> A in FIG. 7 and FIG. 8) for a strip-shaped insulating film having a predetermined width. The main sheet 27 is formed by punching a portion 27 </ b> A serving as a gap between the hole 26 </ b> B and each sheet plate 26 at a predetermined pitch.
[0039]
Next, an adhesive-attached tape-like sheet 30 in which a tape-like adhesive 29 having substantially the same width as this is overlapped and bonded to the upper surface of a thin tape-like sheet 28 made of an insulating film whose upper surface has been subjected to a peeling treatment. The two sheets are attached in parallel along the longitudinal direction in the vicinity of both side portions of the main sheet 27 where there is no through-hole 26B. The center of the width of the tape-like sheet 30 with adhesive is approximately the sheet plate 26. Is pasted so as to coincide with a straight line that becomes an outline 26A (shown by a dotted line in FIGS. 7 and 8) (see FIG. 8).
[0040]
After that, a belt-like connecting / protecting sheet 32 made of an insulating film having a slight adhesive 31 on the entire upper surface and having the same width as the main sheet 27 is bonded to the lower surface of the tape-like sheet 28, and then the elastic metal thin plate A small piece sheet 3 made of a flexible insulating film in which the upper surface protrusion of the dome-shaped movable contact 2 made of adhesive is held by the adhesive 3A on the lower surface, and the movable contact 2 is accommodated in each through hole 26B. By pasting on the main sheet 27 so as to close the upper surface of the sheet 26B, a shape as shown in FIG. 9 which is a cross-sectional view of the sheet after bonding is formed, and each through hole 26B accommodating the movable contact 2 of the main sheet 27 is formed. The connection / protection sheet 32 is lightly adhered to the lower surface with a slight adhesive 31 and is closed.
[0041]
After that, the tape-like adhesive 29 in the portion 27A that becomes the gap between the outer sheet 26A of the main sheet 27 and the tape-like adhesive 29 shown in FIG. 9 is cut as shown by an arrow in FIG. 9, and a punching portion of a portion 27 </ b> A that becomes a gap between the half-cut processing line of the main sheet 27 and the tape-like adhesive 29 and the sheet plate 26 of the main sheet 27 is formed. Try to connect.
[0042]
Thereafter, as shown in the sectional view of FIG. 10, the half-cut strip-like sheet 33 is placed on the jig 34A, and the outer side portions 27B on both sides of the portion of the main sheet 27 to be the sheet plates 26 are viewed from above. While pressing, the portion to be the sheet plate 26 is pulled upward so as to be peeled off by the suction jig 34B or the like, or as shown in a side view of FIG. The movable contact body 13 is continuously taken out by bending the outer side portion 27B of the main sheet 27 and the connection / protection sheet 32 downward so that the portions to be the sheet plates 26 of the main sheet 27 remain. be able to.
[0043]
As described above, according to the present embodiment, the movable contact body 13 can be continuously manufactured at low cost, and transported in the state of the half-cut belt-like sheet 33 before the individual movable contact body 13 is taken out. In addition, by separating and supplying continuously as individual movable contact bodies 13 immediately before being bonded to the substrate of the used device, the bonding operation to the substrate of the used device can be made more efficient, and bonding by an automatic machine is also possible. Further, during storage and transportation, it is possible to almost completely prevent dust and the like from adhering to the contact surface of the lower surface of the movable contact 2 accommodated in the through hole 26B of the sheet plate 26.
[0044]
(Embodiment 5)
FIG. 12 is an exploded perspective view for explaining the outline of the manufacturing method of the movable contact body for the panel switch according to the fifth embodiment of the present invention. The method will be described according to the manufacturing procedure.
[0045]
First, a strip-shaped insulating film having a predetermined width is punched at a predetermined pitch with a through-hole 26B required for each sheet plate 26 of the movable contact body and a gap 27A between the sheet plates 26. Forming the sheet 27 is the same as in the fourth embodiment.
[0046]
Next, in parallel along the longitudinal direction in the vicinity of both side portions of the main sheet 27, two tape-like adhesives 29 having a narrow width are formed, and a straight line in which the center of the tape-like adhesive 29 is substantially the outline 26A of the sheet plate 26. Paste to match.
[0047]
Thereafter, a strip-shaped connecting sheet 36 made of an insulating film whose entire upper surface is peeled and having the same width as the main sheet 27 is bonded to the lower surface of the tape-like adhesive 29, and then a dome-shaped movable plate made of an elastic metal thin plate. A small piece sheet 3 made of a flexible insulating film in which the upper surface protrusion of the contact 2 is adhered and held by an adhesive 3A on the lower surface so that the movable contact 2 is accommodated in each through hole 26B and closes the upper surface of each through hole 26B. Are bonded to the main sheet 27 to form a shape as shown in the cross-sectional view of the bonded sheet in FIG. 13, and the lower surface of each through-hole 26B accommodating the movable contact 2 of the main sheet 27 is covered with the connecting sheet 36. Is called.
[0048]
Thereafter, the outline 26A of the sheet plate 26 of the main sheet 27 and the tape-like adhesive 29 and the tape-like adhesive 29 in the portion 27A that becomes a gap between the sheet plates 26 of the main sheet 27 are subjected to half-cut processing in FIG. It cuts so that it may show by, and it is carried out so that the punching process part of the part 27A used as the clearance gap between the sheet plate 26 of the main sheet 27 and the sheet sheet 26 of the main sheet 27 and the tape-shaped adhesive 29 may be connected. It is the same as Form 4.
[0049]
Thereafter, the method of taking out the movable contact body 13 from the half-cut belt-like sheet 37 is the same as that in the fourth embodiment.
[0050]
As described above, according to the present embodiment, the movable contact body 13 can be continuously manufactured at a low cost, and transported in the state of the half-cut belt-like sheet 37 before the individual movable contact body 13 is taken out. In addition, by separating and supplying continuously as individual movable contact bodies 13 immediately before being bonded to the substrate of the used device, the bonding operation to the substrate of the used device can be made more efficient, and bonding by an automatic machine is also possible. Furthermore, damage to the movable contact 2 during transportation can be prevented.
[0051]
【The invention's effect】
As described above , according to the method for manufacturing the movable contact body of the present invention, the movable adhesive body is provided with adhesives attached to only one of the opposite end portions on the lower surface of the sheet plate holding the movable contact. continuously contact body can be manufactured at low cost, work with the resulting movable contact has This, when bonded to a substrate using apparatus having a fixed contact, the operator has a portion without adhesive Therefore, it is possible to work reliably and efficiently, and to reduce the material cost because the adhesive is partially applied. Further , the movable contact body is configured to have a movable contact in the through hole of the sheet plate. in the production of, the with adhesive through holes in the die stamping is not attached, it is also possible storage and transport in the connected state of continuous production and then advantageous that the efficiency of machining can be achieved Results can be obtained.
[Brief description of the drawings]
1A is a cross-sectional view of a movable contact body according to a first embodiment of the present invention, FIG. 1B is an enlarged cross-sectional view of the main part thereof, and FIG. 2C is an exploded perspective view thereof. (B) Enlarged cross-sectional view of the main part (c) Exploded perspective view [FIG. 3] Cross-sectional view for explaining the mounting method of the movable contact body [FIG. FIG. 5 is an external perspective view of a connected movable contact body according to a second embodiment of the present invention. FIG. 6A is a movable view with a protective sheet according to a third embodiment of the present invention. FIG. 7 is an exploded perspective view for explaining an outline of a method for manufacturing a movable contact body according to a fourth embodiment of the present invention. FIG. 8 is a plan view of the main sheet. FIG. 9 is a cross-sectional view of the sheet after the bonding. FIG. FIG. 11 is a side view illustrating another method of taking out the movable contact body from the half-cut strip-like sheet. FIG. 12 is a side view of the movable contact body according to the fifth embodiment of the present invention. FIG. 13 is a cross-sectional view of the sheet after bonding. FIG. 14A is a cross-sectional view of a conventional movable contact body. FIG. 13B is an enlarged cross-sectional view of the movable contact portion. ) The same exploded perspective view [FIG. 15] (a) The sectional view of the movable contact body with the protective sheet (b) The enlarged sectional view of the main part (c) The same exploded perspective view [FIG. 16] Mounting of the movable contact body Side view explaining the method [Fig. 17] Enlarged sectional view of the same contact part [Explanation of symbols]
2 Movable contact 3 Small sheet 3A, 12 Adhesive 8 Fixed contact 11, 26 Sheet plate 11A, 26B Through hole 13 Movable contact body 14 Separator 15, 24 Protective sheet 15A, 22A, 31 Slight adhesive 16, 25 With protective sheet Movable contact body 17 Substrate 18 Panel switch 19 Rubber keys 20, 21 Crosspieces 22, 32 Connection / protection sheets 23, 28 Tape-like sheet 26A Outline 27 Main sheet 27A Space 27B Outer side 29 Tape-like adhesive 30 Adhesive tape-like sheets 33, 37 Half-cut belt-like sheets 34A, 35 Jig 34B Adsorption jig 36 Connection sheet

Claims (1)

A dome-shaped movable contact made of an elastic metal thin plate is held on a sheet plate made of an insulating film formed in a substantially rectangular outer shape, and an adhesive is narrowed only at one end opposite to the lower surface of the sheet plate. A method of manufacturing a movable contact body for manufacturing a movable contact body attached in a band shape, wherein a portion that becomes a gap between each sheet plate holding a dome-shaped movable contact made of an elastic metal thin plate is formed at a predetermined pitch. For the strip-shaped main sheet made of an insulating film that has been continuously punched, at least two narrow tape-like adhesives are attached in parallel along the longitudinal direction in the vicinity of both sides of the lower surface of the main sheet, Further, a step of bonding a strip-shaped connecting sheet having the same width as that of the main sheet to the lower side of the tape-shaped adhesive, and then the tape-shaped adhesive connected to the punched portion of the main sheet. The main sheet and tape-like adhesive are half-cut to match the outline of the individual sheet plate so that it remains in the form of a narrow band at each of the opposite end positions on the sheet plate side. A method of manufacturing a movable contact body including a step of removing unnecessary portions.

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